For the first time in over a decade, the Federal Reserve began dispersing 3.5 billion new and improved $100 bills to banks across the country.

The brand new notes, complete with the old familiar face of American statesman and scientist Benjamin Franklin, incorporate new security features that make it nearly impossible to counterfeit, according to the central bank.

The Fed has spent years working with the Secret Service and the Treasury Department to step up security on the C-notes, which U.S. officials say are likely the most counterfeited currency in the world.

The new features include a blue three-dimensional security ribbon with images of bells and 100s, and a color-changing bell in an inkwell.